I too saw the Photo's of the Port Chrono with Pin/Tang buckle, yet lucky new owners of the 3904 show it on deployant. Sometimes official release pic's are taken prior to last minute changes such as witnessed by the strap changes made to the new Inge's.

Regarding the Santoni, as far as I know they are only made in 22mm and unfortunately the 3717 is 21mm. Heard that depending on flexibility, some 22's can be squeezed to fit on a 21 but I would only try that out at a AD/Boutique.